Addressing the Surge of Chronic Diseases in Global Animals

A rising crisis in chronic diseases is affecting animals worldwide, with conditions such as cancers, obesity, diabetes, and degenerative joint disease becoming increasingly prevalent. According to a recent study published in the journal Risk Analysis, researchers emphasize the critical need for interdisciplinary approaches to understand and manage these non-communicable diseases (NCDs), which are impacting both animal and human health.

Antonia Mataragka, an animal scientist from the Agricultural University of Athens, developed an innovative conceptual model aimed at enhancing the surveillance and management of chronic diseases in animals. This model, based on evidence from existing research, highlights the interplay between genetic predispositions, environmental factors, and human-driven ecological changes that exacerbate the incidence of NCDs.

The study reveals alarming statistics about the prevalence of these diseases. For instance, surveys indicate that approximately 50–60% of domestic cats and dogs are classified as overweight, resulting in a notable rise in feline diabetes. Similarly, around 20% of intensively reared pigs suffer from osteoarthritis. In marine environments, wildlife exposed to industrial pollutants show liver tumor rates ranging from 15–25%.

The research underscores that genetic factors play a significant role in the vulnerability of certain animal populations to NCDs. Dogs and cats bred for specific traits often face higher risks for conditions like diabetes and mitral valve disease. Environmental influences, including nutritional imbalances, sedentary lifestyles, and chronic stress, further contribute to the onset and progression of these diseases across various species.

Environmental and Human Impacts on Animal Health

The findings also highlight how human activities are intensifying these health challenges. Urbanization, climate change, and biodiversity loss have led to increased harmful exposures for both wildlife and domesticated animals. For example, warming ocean temperatures and coral degradation have been linked to a rise in tumors among marine turtles and fish. Additionally, urban air pollution and chemical runoff are associated with endocrine and immune disorders in various species.

Mataragka noted, “As environmental changes accelerate disease emergence, the absence of early diagnostic systems further delays the detection of NCDs in animals.” She pointed out that while organizations such as the World Health Organization provide extensive data on NCDs in humans, there is a concerning lack of similar statistics for animals. This gap highlights the urgent need for enhanced research and surveillance in veterinary health to effectively address these escalating health issues.

The study quantifies the prevalence of NCDs across different species, identifies mechanisms linking risk factors to disease emergence, and proposes mitigation strategies at various levels, including individual, population, ecosystem, and policy. Key drivers identified include climate change, habitat destruction, pollution, and dietary imbalances, which all contribute to the increased vulnerability of companion animals, livestock, and wildlife.

A Call for Integrated Approaches

Mataragka’s model represents a synthesis of the One Health and Ecohealth approaches, which recognize the interconnectedness of human, animal, and environmental health. By illustrating how NCDs arise from the interaction of biological susceptibility with socio-ecological factors, the model aims to foster more integrated surveillance efforts.

The ultimate goal is to identify shared drivers of NCDs among species and provide early warning systems to mitigate the incidence of these diseases. Mataragka’s hope is that through collaborative research and enhanced monitoring, the health of animals can be improved, ultimately benefiting human health as well.

As chronic diseases in animals continue to rise, the findings from this study call for immediate action and collaboration among researchers, veterinarians, and policymakers. Only through a comprehensive understanding of the factors at play can effective strategies be developed to combat this growing crisis.